Peeking and Poking Inside

Here’s a follow up to my last image that may interest a few of my my technically inclined friends.

Not long after I received this stopwatch I watched it stop! And it stayed stopped. I’d peeked inside by opening the cashback a few times to admire that vintage Valjoux 330 movement but now it was time to start poking around in there.
I quickly found that the gear train had jammed somewhere between the mainspring and the escapement so decided to tackle this one myself.

To cut a long story short this is the very first movement I’ve completely disassembled and rebuilt successfully and has since not missed a beat.

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